There really AREN'T any much better at that price. None that would be worth paying the extra $15-$20 for. The only ones that are worth getting above an Evo are ones that cost around 3x what it costs, but they outperform it enough to make them worth it.
Besides, a 212 Evo will pretty easily do 4.6 on a 2500K (assuming the voltage needed isn't insane). I can quite easily do 4.6 on my 2500K with my own 212 Evo in push/pull, I just keep it at 4.5 because I don't NEED anything higher (and truthfully, neither should you, unless you're running a 3 or 4-Way GPU setup). Hell, I don't even NEED 4.5, but I do it anyway because I can on relatively low voltage and temps.